A statistics class collected data about male and female heights. The sample of 143 females had...

A statistics class collected data about male and female heights. The sample of 143 females had a mean height of 64 inches with a standard deviation of 2.84 inches. Assuming that the standard deviation of all such female heights is 2.60 inches, use a 0.05 significance level to test the claim that women’s heights have a mean different from 63.8 inches.

We are testing the claim about a (mean, proportion, standard deviation): ______________________

Which test will you use (proportion, z-test, t-test, chi-square test): ____________________________

H0: ____________________________
H1: ____________________________

Test Statistic(s): (3 decimals) _________________________________

P-value: (4 decimals)________________________________________

Critical Value(s): (3 decimals)_________________________________

Reject or fail to reject: _____________________________

Conclusion: _________________________________________________________________ ___________

  ____________________________________________________________________________
  ____________________________________________________________________________

In a USA Today poll of 737 respondents, 678 people said that they do not open unfamiliar email and instant-message links. Use a 0.01 significance level to test the claim that more than 75% of us do not open unfamiliar email and instant-message links.

We are testing the claim about a (mean, proportion, standard deviation): ______________________

Which test will you use (proportion, z-test, t-test, chi-square test): ____________________________

H0: ____________________________
H1: ____________________________

Test Statistic(s): (3 decimals)_________________________________

P-value: (4 decimals)________________________________________

Critical Value(s): (3 decimals)_________________________________

Reject or fail to reject: _____________________________

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

The data below shows data collected at the end of a statistics class to investigate the...

The data below shows data collected at the end of a statistics class to investigate the relationship between x = study time per week (average number of hours) and y = college GPA. The table shows the data for the 8 males in the class on these variables and on the number of class lectures of the course that the student reported skipping during the term. Is there a statistically significant correlation between study time and GPA at the .05...

In a survey of 500 females and 500 male students, 345 and 365 female and male...

In a survey of 500 females and 500 male students, 345 and 365 female and male students respectively, reported that they decided to attend college in order to make more money. Is ther population of female students who decided to attend college in order to make more money less than that of male studenst? Conduct the test with a significance level of 0.05.

Questions 28-29: You have collected data on heights, in inches, from 41 males and 52 females....

Questions 28-29: You have collected data on heights, in inches, from 41 males and 52 females. The sample standard deviations for males and females are, respectively, 6.1 and 4.9. 28. Find the appropriate test statistic to test equality of variances between the genders.: * (A) 0.2541 (B) 1.2449 (C) 1.5498 (D) 7.5939 29. On what distribution would you obtain the p-value?: * (A) The F distribution with degrees of freedom 41 and 52. (B) The T distribution with degrees of...

In Milwaukee, they randomly sampled 280 female voters, and 220 male voters. They collected data on...

In Milwaukee, they randomly sampled 280 female voters, and 220 male voters. They collected data on the respondent's opinion on building a new sports stadium. We want to know whether there is good evidence that one's gender influences whether a person is for or against the new stadium. Use αα = 0.05. For Bond Issue Against Bond Issue Total Men 77 203 280 Women 14 206 220 Total 91 409 500 a) What is the correct null hypothesis? HoHo: p1=p2=p3=p4p1=p2=p3=p4...

In a recent college statistics class, data was collected on each student's height and their shoe...

In a recent college statistics class, data was collected on each student's height and their shoe size. The first three tables of the regression output are below the conclusions. Please agree or disagree with the conclusions and, of course, state your statistical reasoning. There is sufficient evidence to believe that a statistically significant relationship exists between a student's height and his/her shoe size. About 80% of the variation in shoe size is determined by the variation in height. For each change...

A random sample of 201 newborn piglets contains 90 females (data collected by Alexa Hopping and...

A random sample of 201 newborn piglets contains 90 females (data collected by Alexa Hopping and Brett Troyer, 2011). Calculate a 90% confidence interval for the proportion of all newborn piglets that are female.

2. According to survey data collected from 500 students in a recent Statistics class, the histogram...

2. According to survey data collected from 500 students in a recent Statistics class, the histogram for the number of hours of sleep they typically got per night is close to the normal curve with an average of 6.5 hours and a SD of 1.4 hours. a) Find percentage of students who sleep between 7 and 8 hours b) A student who sleeps 7 hours per night is at the _______th percentile of the score distribution c) Find the first...

The heights, in inches, for 120 people (male and female) have been measured. The results are...

The heights, in inches, for 120 people (male and female) have been measured. The results are presented: Download the data Heights sample data: 65.14 66.74 65.37 65.08 69.62 69.34 70.32 62.38 67.77 64.1 65.43 63.21 66.74 62.22 68.76 67.67 68.29 66.62 66.74 66.8 63.06 70.33 67.36 64.78 67.2 68 66.09 67.81 67.58 69.13 65.06 62.91 64.05 66.49 60.33 68.98 65.57 63.88 64.62 66.27 68.32 61.34 63.95 71.76 63.1 70.3 64.89 66.74 67.77 64.22 69.18 71.19 67.43 63.7 69.87 70.1 65.07...

Using the data we collected in class about weight and height, find the following:

Using the data we collected in class about weight and height, find the following: weight = c(130, 220, 180, 170, 135, 120, 200, 208, 210, 180, 110)height = c(5,6,6.2,7.8,5.5,5.3,5.5,6.2,5.8,6.8,4.9) a. Using height as the dependent variable and weight as the independent test if height is positively correlated with weight. What is the null hypothesis and the alternative hypothesis? b. Provide the p-value.c. Conclude this analysis, is this test statistically significant, justify your answer?d. Provide your R coding

A data set about speed dating includes "like" ratings of male dates made by the female...

A data set about speed dating includes "like" ratings of male dates made by the female dates. The summary statistics are n= 195, x= 5.88, s= 2.06. Use a 0.05 significance level to test the claim that the population mean of such ratings is less than 6.00. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P.value, and state the final conclusion that addresses the original claim.

Subjects